Official American League (MacPhail) ball signed by New York Yankees catcher Thurman Munson on a side panel. Munson has beautifully inscribed the ball in blue ink "To Gary/Best Wishes/Thurman Munson," with the signature grading 8/10. Based upon the manufacturing stampings (four dots under "Haiti"), this ball was produced in 1979. As such, it was signed by Munson just a short time before his tragic death in a plane crash on August 2nd. The ball displays moderate soiling, indicating it may have been a game use ball, and is otherwise in Excellent condition. Full LOA from JSA.